Operating pumps



IUNITED STATES PATENT oEEioE.

JAMES ARMSTRONG, OF DOBBINSVILLE, NORTH CAROLINA.

OPERATING PUMPS.

Specification of Letters Patent No. 32,038, dated April 16, 1861.

accompanying drawings, forming a part of` this specification, in whichFigure l, represents a `vertical longitudinal, and Fig. 2, a verticalcross section.

Similar letters of reference, in each of the several figures, indicatecorresponding parts. rlhe nature of my invention consists in thecombination of a pendulum and chair, spiral spring and stop rod with alever or levers4 and two or more pumps, for the purpose to be described.

To enable others, skilled in the art, to make and use my invention Iwill proceed to describe its construction and operation.

The bar A, is fulcrumed at its upper end at I, and weighted at its lowerend, as seen at H, so as to form a pendulum. A chair F, is fastened toits lower end upon which a person is to take his seat, as represented atF ig. l. Two arms J, J, extend from the upper end of the pendulum bar,and the piston rods C, C, of two pumps E, E, are hung to the outer endsof said arms. Another arm or several arms A, may be made to eX- tendfrom the upper end of the pendulum bar and the piston rods C, of acorresponding number of pumps be hung to it.

The pendulum being started, the operator, seated upon chair F, can keepit in constant motion by striking the fixed rod G, with his foot andthus increasing the tendency of the pendulum to fly back as often as itarrives at this end of its motion.

The action of the operators foot will stop the forward motion of thependulum, and

cause it to commence its return motion, thereby reversing the pumpswithout a sudden shock. The distance of the rod G, from the center lineof the pendulum motion is so arranged that by the time one ofthe pistonsarrives at the bottom end of its cylinder, the operators foot will justreach the rod. Thus the pendulum will be prevented from swinging too farso as to cause the pump piston to strikeagainst the bottom of thecylinder.. To stop the backward motion of the pendulum at the time theother piston arrives at the bottom of its cylinder and to prevent 'thevpendulum from swinging so far back as to cause the piston to strike thebottom of the cylinder, the spiral spring B, is placed around thefulcrum of the pendulum, the inner end of the spring being attached tothe fulorum shaft of the pendulum, and its outer end to the frame of themachine. The spiral spring is so' arranged that it winds up while thependulum returns, just sullicient to absorb any surplus of momentum ofthe pendulum and thus stop the pendulum from going too far, as abovementioned. The stop rod G, and spring B, combined will thus'serve tolimit the motion of the pendulum both ways, without any sudden shockwhich would-be produced if either of the pistons were allowed to strikethe bottom of its cylinder'.

The advantage of combining the chair F, with the pendulum is to placethe operator in a comfortable position which will allow him to keep themachine going with very little exertion and thus enable him to continuethe operation for a whole day if necessary without becoming muchfatigued.

That l claim as my invention and desire to secure by Letters Patent, is-

The combination of a pendulum A, and chair F, spiral spring B, and stoprod G, with a lever or levers J, J, A, and two or more pumps, arrangedand operating` substantially as and for the purposes set forth.

JAMES ARMSTRONG.

Witnesses GOODWIN Y. ATLEE. R. W. FENWIGK.

